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i386: kvmvapic: initialise imm32 variable 

When processing Task Priorty Register(TPR) access, it could leak
automatic stack variable 'imm32' in patch_instruction().
Initialise the variable to avoid it.

Reported by: Donghai Zdh <donghai.zdh@alibaba-inc.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-Id: <1460013608-16670-1-git-send-email-ppandit@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

(cherry picked from commit 691a02e2ce)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
stable-2.6
Prasad J Pandit 2016-04-07 12:50:08 +05:30 committed by Michael Roth
parent bfc766d38e
commit d00ba3fa9b
1 changed files with 1 additions and 1 deletions
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hw/i386/kvmvapic.c
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@ -394,7 +394,7 @@ static void patch_instruction(VAPICROMState *s, X86CPU *cpu, target_ulong ip)
CPUX86State *env = &cpu->env;
VAPICHandlers *handlers;
uint8_t opcode[2];
uint32_t imm32;
uint32_t imm32 = 0;
target_ulong current_pc = 0;
target_ulong current_cs_base = 0;
int current_flags = 0;